Discussion Questions

• What was Von Neumann's big contribution to computing?

• What are the 6 steps in the instruction cycle?

• What range of values can you branch to from a BR instruction?

• What is the PC?

• What is the IR?

• What is the MAR?

• What is the MDR?

• If the word size of a particular microprocessor is 2B and the Address Space is 64k, what is the size of the PC? IR? MAR? MDR?

• How many bits is the ALUK (the signal sent to the ALU to decide what operation to perform)? What operations can the LC-3 ALU perform?